Expose GT 320M, newer pci sigs, more than 2 monitors(?)

19c285240187995e1996b8f9c586dba07bc35edb was tested, just not with 3 monitors

3f143c20ec8bb9a55264f9fa1f7c4eb7d23cf207 isnt tested, might work, no one is distrubuting this if there isnt a suitable kernel driver